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Cover for Keg, 8L0. 7

H No. 225,167. Patented Mar. 2,1880.

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ummu w N. PE TERS. PHbTO-LITHOQRAFHER. WASHINGT ON. D. C.

UNITED STATES PATENT OFFICE.

ANDREW J. ROBINSON, OF BOSTON, MASSAGHUSETTS, ASSIGN OR TO THOMAS PRINCE, OF SAME PLACE.

cofvER FOR KEGS, 800.

SPECIFICATION forming part of Letters Patent No. 225,167, dated March 2, 1880.

Application filed January 17, 1880.

T all'whom it may concern Be it known that I, ANDREW J. ROBINSON, of Boston, in the county of Suffolk and State of Massachusetts, have invented a new and useful Improvement in Covers for Kegs, Barrels, and other Vessels, of which the following is a specification.

The object of my invention is to provide a detachable transparent cover for an aperture in the top or head of a keg, barrel, or other vessel the contents of which it is desirable to inspect without the necessity of removing the entire top or head of the vessel.

The invention consists of a disk or plate of 1 glass formed with a recess on its upper side and a corresponding depression on its under side, so as to admit of its fitting in a hole in the top of a keg, barrel, or other vessel, and a supporting-rim on the upper edge, in combi- 2o nation with a metal annulus attached to and surrounding the rim of the said disk, and by means of which it maybe secured to the top of the said vessel by screws or otherwise, the whole being designed as a separate article of 2 5 manufacture and sale, to be applied to vessels having a hole in the top.

Referring to the accompanying drawings, Figure 1 represents a transverse vertical section of a vessel having my improvement at- 3o cached. Fig. 2 is a top or plan view of the same.

A represents a vessel in the form of a keg or firkin of ordinary construction, of which B is the top or head. In the center of the top or head B is an opening, F, which may be of any desired size.

In the opening F is fitted a cover, 0, composed of glass and having a projecting rim that rests upon edges of the opening F, and formed with a recess on its upper side and a corresponding depression on its under side, as shown in Fig. 1. Under the projecting edges of the cover 0 is a flat ring or packing, G, of rubber or other elastic material, so as to render the cover air-tight when closed.

Firmly attached to and surrounding the edges of cover G, and having a rim that overlaps the edge of the said cover, is a metal annulus or frame, D, provided With lugs E, through which pass screws by which the annulus D is secured to the head of the vessel. The annulus or frame D may be attached to the head of the vessel by means of a hinge on one side, and properly secured to the head on the opposite side. 5 5

The edge of the aperture E may be provided with a recess or rabbet, in which may be fitted the cover G, if desirable.

The cover 0 is to be attached to the head B in such a manner as to render it entirely air and water tight.

My device is designed to be attached to kegs, barrels, firkins, and wooden vessels of any description.

By means of my invention the contents of any vessel-to which it is attached may be readily seen and inspected without the necessity of removing the whole cover or head, and when desirable a portion of the contents can be easily taken out by detaching the cover 0, and the vessel be again hermetically closed.

I am aware that a glass stopper applied to a can or jaris not new. This I do not claim but What I claim as my invention, and desire to secure by Letters Patent, is-

The glass cover 0, having a recess on its upper side, with a corresponding depression on its under side, and a supporting-rim on its upper edge, in combination with a metal annulus, D, attached to and surrounding the edge and a portion of the top of the supporting-rim of cover 0, substantially as and for the purpose set forth.

In testimony whereof I have signed my name to this specification in the presence of two 8 subscribing witnesses.

ANDREW J. ROBINSON.

Witnesses:

OSCAR P. GREENE, J os. H. ADAMS. 

